GB667279A - Improvements in and relating to the heat treatment of cold rolled silicon steel strip - Google Patents

Improvements in and relating to the heat treatment of cold rolled silicon steel strip

Info

Publication number
GB667279A
GB667279A GB402/49A GB40249A GB667279A GB 667279 A GB667279 A GB 667279A GB 402/49 A GB402/49 A GB 402/49A GB 40249 A GB40249 A GB 40249A GB 667279 A GB667279 A GB 667279A
Authority
GB
United Kingdom
Prior art keywords
silicon steel
relating
heat treatment
steel strip
cold rolled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB402/49A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB667279A publication Critical patent/GB667279A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

Decarburized silicon steel is annealed at 850-900 DEG C in a non-oxidizing atmosphere for 4 to 24 hours and then heat-treated at 900-1200 DEG C in a reducing atmosphere for 1 to 8 hours. The steel may contain 1.5-4.0 per cent silicon and may be cold reduced from 0.1 inch to 0.014 inch in two stages with a continuous anneal at 925 DEG C between stages, the final reduction being one of 50 per cent. The second heating may immediately follow the first or may p be carried out some time later. The treatment is stated to produce a silicon steel with good magnetic properties.
GB402/49A 1948-01-14 1949-01-06 Improvements in and relating to the heat treatment of cold rolled silicon steel strip Expired GB667279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US667279XA 1948-01-14 1948-01-14

Publications (1)

Publication Number Publication Date
GB667279A true GB667279A (en) 1952-02-27

Family

ID=22071306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB402/49A Expired GB667279A (en) 1948-01-14 1949-01-06 Improvements in and relating to the heat treatment of cold rolled silicon steel strip

Country Status (1)

Country Link
GB (1) GB667279A (en)

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